P2299- BRAKE PEDAL POSITION/ACCELERATOR PEDAL POSITION INCOMPATIBLE

For a complete wiring diagram Refer to Section 8W.

When Monitored:
With the engine running (engine speed above 710 rpm). No other APP or Brake Signal DTC's. Vehicle speed above 3 km/h.
Set Condition:
The ECM detects a brake signal input (brakes applied) and Accelerator Pedal Position input is above 3% at the same time for 15.0 seconds.

Possible Causes

ACCELERATOR PEDAL POSITION SENSOR

ACCELERATOR PEDAL OBSTRUCTION

BRAKE SWITCH ADJUSTMENT

BRAKE SWITCH

INTERMITTENT WIRING/CONNECTOR PROBLEM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

Diagnostic Test

1. CHECK FOR ACTIVE DTC

NOTE: This DTC may be set if the vehicle operator is “riding” the brake pedal (driving with both feet).

With the scan tool, clear all ECM DTCs.
Test drive the vehicle performing several stop-and-go operations.
With the scan tool, view active ECM DTCs.

Does the scan tool display this DTC?

Yes

Go To 2

No

Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

2. CHECK BRAKE SWITCH OPERATION

NOTE: This DTC may be set if the Brake Switch is not properly adjusted. Check Brake Switch adjustment before continuing.

Turn the ignition on.
With the scan tool, read the Primary and Secondary Brake Switch Input.

Are the Primary and Secondary Brake Switch inputs operating properly?

Yes

Go To 3

No

Refer to the Service Information Wiring to diagnose Brake Switch and/or Brake Switch wiring problem.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

3. CHECK ACCELERATOR PEDAL MOVEMENT

Turn the ignition off.
Check the Accelerator Pedal for obstructions or other problem that could restrict pedal travel, cause binding or prohibit the pedal from traveling to the complete rest position.

Were any of these problems found?

Yes

Repair or replace as necessary.

Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

No

Go To 4

4. CHECK ACCELERATOR PEDAL POSITION SENSOR INPUT

Turn the ignition on.

NOTE: The Accelerator Pedal must be at the complete rest position for this test. Ensure the pedal is at rest and free from any obstruction.

With the scan tool, read the APP #1 and APP #2 percentages.

Does the scan tool display below 2% for APP #1 and APP #2 percentages?

Yes

Go To 5

No

Replace the Accelerator Pedal Position Sensor.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

5. INTERMITTENT APP SENSOR/BRAKE SWITCH

Turn the ignition on.
With the scan tool, read the APP #1 and APP #2 percentages
Fully depress and release the Accelerator Pedal several times.
With the scan tool, read the Primary and Secondary Brake Switch inputs.
Fully depress and release the Brake Pedal several times.

Were any problems found with the inputs during pedal actuation for the Brakes or Accelerator?

Yes

Repair or replace as necessary.

No

Using the wiring diagrams check the connectors and wiring associated with the Accelerator Pedal Sensor and Brake Switch for damage, corrosion or other problems that could cause an intermittent DTC.